/// 测试while
pub fn test() {
    let mut c1 = 1;

    'outer_while: while c1 < 6 {
        let mut c2 = 1;
        while c2 < 6 {
            println!("Current value is : [{}][{}]", c1, c2);
            if c1 == 2 && c2 == 2 { break 'outer_while; }
            c2 += 1
        }
        c1 += 1;
    }
}
